﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Collections;
using System.Security.Cryptography;

namespace EverydayTips
{
    class Util
    {
        public static void Log(string msg)
        {
            using (StreamWriter w = File.AppendText("log.txt"))
            {
                w.WriteLine(msg);
                w.Close();
            }
        }
        public static string Array2String(Object o)
        {
            ArrayList al = (ArrayList)o;
            string ret = "";
            for (int i = 0; i < al.Count; i++)
            {
                ret += al[i].ToString();
                ret += " ";
            }
            return ret;
        }
        public static string Index2String(Object o)
        {
            string ret = "";
            Index d = (Index)o;
            foreach (string key in d.keywordsIndex.Keys){
                ret += key;
                ret += "=>";
                ret += Array2String(d.keywordsIndex[key]);
                ret += "\r\n";
            }
            return ret;
        }
        public static string getMd5Hash(string input)
        {
            // Create a new instance of the MD5CryptoServiceProvider object.
            MD5 md5Hasher = MD5.Create();

            // Convert the input string to a byte array and compute the hash.
            byte[] data = md5Hasher.ComputeHash(Encoding.Default.GetBytes(input));

            // Create a new Stringbuilder to collect the bytes
            // and create a string.
            StringBuilder sBuilder = new StringBuilder();

            // Loop through each byte of the hashed data 
            // and format each one as a hexadecimal string.
            for (int i = 0; i < data.Length; i++)
            {
                sBuilder.Append(data[i].ToString("x2"));
            }

            // Return the hexadecimal string.
            return sBuilder.ToString();
        }
    }
}
